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Degradation of Mn-doped BaTiO3 ceramic under a high d.c. electric field

Rödel, Jürgen ; Tomandl, G. :
Degradation of Mn-doped BaTiO3 ceramic under a high d.c. electric field.
[Online-Edition: http://dx.doi.org/10.1007/BF02396925]
In: Journal of Materials Science, 19 (11) pp. 3515-3523. ISSN 0022-2461
[Artikel], (1984)

Offizielle URL: http://dx.doi.org/10.1007/BF02396925

Kurzbeschreibung (Abstract)

A manganese-doped BaTiO3 was investigated with regard to the degradation of resistivity under a high d.c. electric field. Degradation was measured as a function of time, composition and temperature, using an electric field of 3 Vμm−1. The activation energy of the process was found to be 1.13 eV. to clarify the mechanismI againstU characteristics andI againstT graphs of new, degraded and relaxed samples were studied. Electron paramagnetic resonance and potential measurements were found to be useful in describing the degradation. Finally, a brief model is put forward to account for the observed phenomena. It is based on an injection of oxygen vacancies from the anode, which is accompanied by a reduction of manganese in the lattice. Based on a thesis submitted by J. Rödel for the diploma degree at the Department of Ceramics, University of Erlangen, West Germany.

Typ des Eintrags: Artikel
Erschienen: 1984
Autor(en): Rödel, Jürgen ; Tomandl, G.
Titel: Degradation of Mn-doped BaTiO3 ceramic under a high d.c. electric field
Sprache: Englisch
Kurzbeschreibung (Abstract):

A manganese-doped BaTiO3 was investigated with regard to the degradation of resistivity under a high d.c. electric field. Degradation was measured as a function of time, composition and temperature, using an electric field of 3 Vμm−1. The activation energy of the process was found to be 1.13 eV. to clarify the mechanismI againstU characteristics andI againstT graphs of new, degraded and relaxed samples were studied. Electron paramagnetic resonance and potential measurements were found to be useful in describing the degradation. Finally, a brief model is put forward to account for the observed phenomena. It is based on an injection of oxygen vacancies from the anode, which is accompanied by a reduction of manganese in the lattice. Based on a thesis submitted by J. Rödel for the diploma degree at the Department of Ceramics, University of Erlangen, West Germany.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Materials Science
Band: 19
(Heft-)Nummer: 11
Fachbereich(e)/-gebiet(e): Fachbereich Material- und Geowissenschaften > Materialwissenschaften > Nichtmetallisch-Anorganische Werkstoffe
Fachbereich Material- und Geowissenschaften > Materialwissenschaften
Fachbereich Material- und Geowissenschaften
Hinterlegungsdatum: 13 Jun 2012 10:41
Offizielle URL: http://dx.doi.org/10.1007/BF02396925
ID-Nummer: 10.1007/BF02396925
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